Air quality index [µg/m3]:
excellent ≤ 20
good ≤ 60
lightly polluted ≤ 100
moderately polluted ≤ 140
heavily polluted ≤ 200
severely polluted > 200
PM 2.5
[µg/m3]
PM 10
HOUR OPOLSKA ST. ROOF (BEFORE FILTERS)  AIR SUPPLIED TO OFFICES
14006excellentexcellent11excellent
130010excellentexcellent22excellent
120022goodexcellent42excellent
110036goodexcellent71excellent
100052goodexcellent101excellent
090064lightly pollutedexcellent101excellent
080083lightly pollutedexcellent121excellent
070077lightly pollutedexcellent101excellent
060066lightly pollutedexcellent91excellent
050069lightly pollutedexcellent101excellent
040069lightly pollutedexcellent101excellent
030068lightly pollutedexcellent101excellent
020069lightly pollutedexcellent101excellent
010076lightly pollutedexcellent121excellent
000067lightly pollutedexcellent91excellent
230063lightly pollutedexcellent81excellent
220065lightly pollutedexcellent81excellent
210064lightly pollutedexcellent81excellent
200051goodexcellent51excellent
190029goodexcellent41excellent
180031goodexcellent41excellent
170025goodexcellent41excellent
160030goodexcellent51excellent
150022goodexcellent41excellent